Answer AND Explanation:
<u>FACTORS THAT CAUSE GENETIC VARIATIONS</u>
- Crossing over. At the chiasmata during prophase I of meiosis, breakage may occur and exchange of genetic information may take place. New gene combinations which result in variations.
- Independent assortment. The arrangement of homologous chromosomes at the equator of the spindle during metaphase of the first meiotic division is random. These homologous chromosomes segregate into different daughter cells which contain different genetic combinations which brings about variation
- Fertilisation permits parental genes to be brought together in different combinations. This is the cause of variations in members of the same family.
- Mutation is the spontaneous change in the genetic makeup of an organism. These changes may be inherited by the offspring therefore beginning variation.
Answer:
a nucleus or organelles :)
Explanation:
a prokaryote is a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles.
Answer:
Answer: The correct answer is discovery of codons. Marshall Nirenberg and Heinrich Matthaei experimentally deciphered the first out of 64 codons present in our biological system. ... So, it helped in decoding the first codon out of 64.
Explanation:
Enzymes are the things in our bodies that facilitates reactions. They break down bonds in carbohydrates, lipids and proteins. When the food is being broken down, it is easier for the body to use. When the body is conducting cellular respiration, it uses monosaccharides (singular carbohydrate), to form ATP which is useable energy for the body. The body uses ATP everywhere for all bodily functions, which maintains homeostasis. <span />
